[hjasak]

So far, you've got a bunch of points, but only one block:

hex (0 1 2 3 4 5 6 7)
(50 50 1)
simpleGrading (1 1 1)

Since the block only uses points 0-7, it is clear that face 4(0 16 17 3) does not have a block it belongs to, which is as error.

Which part of the error message don't you understand?

Hrv

[shellbell1999]

It's hard for me to explain what i want the mesh to look like but basically its a cube and points 16 and 17 lie on the left wall of the cube. The block I defined is the entire cube and I assumed that in defining this since 16 and 17 were on the cube it would be alright. So I'm guessing this isn't true?

And the main part of the error is:
--> FOAM FATAL ERROR : face 0 in patch 0 does not have neighbour cell face: 4(0 16 17 3)

what is a cell face?

Thanks

[hjasak]

Not true - read the section in the manual about mesh generation. You will need to define more than one block, or create one block and then re-patch the boundaries to grab the face you want to catch. Currently, blockMesh only allows you to grab the whole side of a block to define a boundary patch.

Try thinking about how the code is supposed to do its job: the only way to "find out" that your points ar on the surface would be through floating point comparisons, which would be very very bad indeed.

Hrv

[shellbell1999]

Ahhh I did not know that. Thank you very much. I'll try that

Shelley

[shellbell1999]

Oops nevermind. Apparently I just couldn't see that extra parenthases.

[curiosity]

Hi,

I´ve made a geometry and I´ve got the same error:

FOAM FATAL ERROR:
face0 in patch 11 does not have neighbour cell face: 8(160 161 162 163 164 165 166 167)

The question is, I know the order to name the vertices in a block and I´ve reviewed all my vertices and blocks... Could it be another cause to this message error?

The face0 of the cell is next to a part of another bigger cell... Could it be the problem?

Thanks!